JP4668759B2 - Facsimile machine - Google Patents

Description

  The present invention relates to a facsimile apparatus, and more particularly to a technique for avoiding duplicate printing between image data in which a reception error has occurred and image data to be retransmitted.

Conventionally, as this type of facsimile apparatus, a technique disclosed in Patent Document 1 is known. In the related art, received image data is temporarily stored in an image memory, and is printed after reception is completed. Then, when a reception error is detected in the middle of reception, the related art notifies the transmission side facsimile apparatus of the reception error by a post-message procedure (exchange of control signals performed after transmission of image data), and a message in response to this When a retransmission of image data is notified from the transmission side in the pre-procedure (exchange of control signals performed before transmission of image data), the image data stored in the image memory is deleted. The prior art thereby avoids duplicate printing between image data in which a reception error has occurred and image data to be retransmitted.
JP 61-255158 A

  However, the above prior art is premised on that control signals can be exchanged normally even if there is a reception error. Therefore, when a communication abnormality that prevents even the exchange of control signals occurs and the communication is disconnected and the image data is retransmitted by redialing, the image data in which the reception error has occurred is printed. Therefore, if there is a page that has been received halfway due to a reception error, the page is printed redundantly by printing image data retransmitted from the interrupted page by redialing.

  On the other hand, it is possible to assume a technique of always discarding a page that has been received halfway without being printed. However, if there is no retransmission due to redialing, the information on a certain page is lost although it is terminated halfway, so the assumed technique is not desirable.

  The present invention has been made in view of the above-described problems, and when there is a reception error during image data reception, it is possible to avoid printing duplicate image data and to print image data without any shortage. An object of the present invention is to provide a facsimile machine.

In order to solve the above problems and achieve the above object, a first aspect of the present invention relates to a facsimile apparatus, which is received through an image memory, an image recording unit for printing image data, and facsimile communication. The received image data storage unit that stores image data in the image memory, and the image data that is stored in the image memory after the completion of the reception of the image data is printed on the image recording unit, and the reception is completed halfway. for poor reception image data is data, and the image recording control section that gives a preset predetermined waiting time until printing, when it receives the new image data for a plurality of pages, poor reception unprinted If image data is stored in the image memory, the first page of the new image data is compared with the last page of the poorly received image data. An image data comparison unit for, those equipped with.

The image recording control unit discards the last page of the reception failure image data and the reception failure image data when the image data match is recognized in the comparison by the image data comparison unit. New image data is printed on the image recording unit, and if the image data does not match, the new image data is printed on the image recording unit and received in the image memory. There is poor image data, and when the reception of the new image data in said predetermined waiting time is not started, is intended to print the poor reception image data to the image recording unit.

  According to this configuration, the image data received through the facsimile communication is stored in the image memory and printed after the reception is completed. At this time, at least the reception failure image data that has been received halfway due to the occurrence of a reception error is given a predetermined waiting time without being printed immediately. Then, when reception of new image data is normally completed, if unrecognized reception failure image data is stored in the image memory, the first page of new image data and the last page of reception failure image data Are compared, and if they match, the last page of the defective reception image data is discarded, and the defective reception image data and the new image data are printed. If no match is found in the comparison, new image data is printed. Accordingly, when image data is retransmitted by redial due to a reception error during image data reception, printing of duplicate image data is avoided. Further, if there is poor reception image data stored in the image memory without being printed even after a predetermined waiting time from the end of reception, the poor reception image data is printed. In this way, poorly received image data that has not been retransmitted by redial is printed after a certain period of time, so there is no possibility that the received image data will fail to print.

  According to a second aspect of the present invention, there is provided a facsimile apparatus according to the first aspect, wherein whether or not the transmission source of the new image data matches the transmission source of the poorly received image data. A transmission source determination unit that determines the transmission source in the determination of the transmission source determination unit in addition to the match of the image data in the determination of the image data comparison unit. Only when it is possible, after the last page of the poorly received image data is discarded, the poorly received image data and the new image data are printed on the image recording unit.

  According to this configuration, not only the first page of new image data and the last page of poorly received image data match, but also when the source of new image data and the source of poorly received image data match. For example, after the last page of poorly received image data is discarded, poorly received image data and new image data are printed. For this reason, it is possible to avoid the possibility that new image data of different transmission sources and reception-defective image data, whose comparison parts of the received image data coincide by chance, are erroneously printed as a series of image data.

  According to a third aspect of the present invention, there is provided a facsimile apparatus according to the first or second aspect, wherein the image data comparison unit includes a first page of the new image data and the reception failure image data. Comparison with the final page is performed only in the area excluding the header portion.

  According to this configuration, since the comparison between the first page of the new image data and the last page of the poorly received image data is performed in the area excluding the header part, the image data with the transmission time attached to the header part. For, it is possible to obtain a correct comparison result.

  As described above, according to the present invention, when there is a reception error during image data reception, it is possible to print the image data without any shortage while avoiding printing of duplicate image data.

  FIG. 1 is a block diagram showing a configuration of a facsimile apparatus according to an embodiment of the present invention. The facsimile apparatus 1 is embodied as a multifunction machine that realizes various functions related to image formation such as a copy function, a printer function, and a scanner function as well as a facsimile function. The facsimile apparatus 1 includes an image reading unit 2, an image recording unit 3, an image memory 4, an operation unit 5, a display unit 6, an interface unit 9, a communication processing unit 10, and a control unit 11.

  The image reading unit 2 is a FAX 13 as a communication partner connected through a communication processing unit 10 and a telephone line (that is, a facsimile line) 12, or a terminal (not shown) such as a personal computer connected externally through an interface unit 9. ) To read the original to be transmitted. Although not shown, the image reading unit 2 includes an automatic document feeding unit that automatically feeds a set document, an imaging unit including a CCD (Charge Coupled Device) line image sensor, and an image processing unit. Automatically feeds the original so that it scans the original surface relatively, converts the original into an image signal in units of lines, and captures the image signal with predetermined signal processing (level correction, γ correction, A / D). Conversion and the like and sequentially output to the control unit 11.

  The image recording unit 3 records the document data read by the image reading unit 2 and the image data (hereinafter referred to as received image data) transmitted from the FAX 13 or the terminal on a sheet. The image recording unit 3 is configured, for example, as a laser printer, and forms a latent image of an image composed of the image data by irradiating the photosensitive member with laser light modulated by the image data, and electrostatically applies a developer such as toner. The latent image is made visible by attaching it to the surface, and an image is formed by transferring the visible image thus obtained onto a sheet.

  The image memory 4 is a memory that stores document data and received image data. For example, the image memory 4 is a large-capacity memory that can store approximately 100 A4-size standard documents.

  The operation unit 5 performs various input operations (input of image data transmission destination information (FAX No., etc.)) for starting document data transmission processing and communication processing with the terminal by the facsimile apparatus 1 and starting / Stop mode, registration of one-touch key or abbreviated No. and setting of various modes and conditions such as communication mode). The operation unit 5 includes various keys (represented by reference numerals 51 and 52) such as a numeric keypad and a one-touch key.

  The display unit 6 includes an LCD (Liquid Crystal Display) and an LED (Light Emitted Diode), and various states such as a line connection state, a transmission state, a communication state with the terminal, and information (FAX) on the transmission destination of document data. No.) etc. are displayed on the LCD as images of characters, figures, etc., and the presence / absence of a communication error, setting mode, received image quality, memory reception and maintenance are indicated by LEDs.

  The interface unit 9 is for externally connecting a terminal to the facsimile apparatus 1 and has, for example, an RS-232C interface. Note that the interface unit 9 is not limited to an RS-232C standard interface as long as the terminal can be communicably connected. For example, a parallel interface may be used.

  The communication processing unit 10 performs transmission / reception processing of image data by facsimile. The communication processing unit 10 includes an encoding / decoding unit 101, a modem unit 102, and a network control unit 103. The encoding / decoding unit 101 compresses and encodes data (image data) to be transmitted by facsimile, and decompresses and decodes data (image data) received by facsimile. The modulation / demodulation unit 102 modulates compressed / encoded image data into an audio signal and demodulates a facsimile received signal (audio signal) into image data. The network control unit 103 corresponds to an NCU (Network Control Unit), and controls the connection of the telephone line 12 with the FAX 13 which is a transmission / reception partner.

  In addition to a CPU (Central Processing Unit) (not shown), the control unit 11 includes a ROM (Read Only Memory) that stores a program that defines the operation of the CPU, a program during operation, and a temporary program. And a storage unit such as a RAM (Random Access Memory) as a main storage device for storing data. That is, the control unit 11 is configured as a computer. As a result, the control unit 11 controls the entire facsimile apparatus 1 in accordance with the instruction information received by the operation unit 5 and the like, detection signals from sensors provided in various places of the facsimile apparatus 1, and the like. More specifically, the control unit 11 functions as an image reading controller 111, a facsimile controller 112, an image recording controller 113, a copy controller 114, and a network controller 115.

  A program for realizing the above-described functions by being read by a computer as the control unit 11 is stored in a non-volatile and large-capacity external storage device such as an HDD (not shown), and the main memory such as the RAM. It can also be used for execution by the CPU by appropriately transferring it to the apparatus. The program can be supplied through a recording medium such as a ROM or a CD-ROM, or can be supplied through a transmission medium such as a network connected to the interface unit 9. The transmission medium is not limited to a wired transmission medium, and may be a wireless transmission medium. The transmission medium includes not only a communication line but also a relay device that relays the communication line, such as a router.

  When the program is supplied through the ROM, the ROM in which the program is recorded is mounted on the control unit 11 so that the program can be executed by the CPU. When the program is supplied through a CD-ROM, the CPU is connected to a parallel interface unit (not shown) and transferred to a RAM or HDD (both not shown) by the CPU. Can be used for execution. When the program is supplied through a transmission medium, the program received through the interface unit 9 can be transferred to the RAM or HDD to be executed by the CPU.

  The image reading controller 111 controls the operation of each unit used for realizing the scanner function. Similarly, the facsimile controller 112, the image recording controller 113, and the copy controller 114 control the operation of each unit used for realizing the facsimile function, the printer function, and the copy function, respectively. The network controller 115 controls communication with a terminal externally connected to the interface unit 9 or communication with a terminal performed via a LAN (Local Area Network) connected to the interface unit 9 or the Internet.

  FIG. 2 is a block diagram showing a configuration of the facsimile controller 112 which is a particularly notable part of the control unit 11. The facsimile controller 112 includes a control signal communication unit 20, a received image data storage unit 21, an image data transmission unit 22, a reception error detection unit 23, a timer 24, a timer setting unit 25, a timer reset unit 26, an image data reading unit 27, and a transmission. An original determination unit 28, an image data comparison unit 29, an image data printing unit 30, and an image data erasing unit 31 are provided. The image data transmission unit 22 transmits image data to be transmitted by facsimile to the counterpart FAX 13 through the communication processing unit 10. The operation of the other parts constituting the facsimile controller 112 will be described together in the following operation description with reference to the flowchart. Both the image data reading unit 27 and the image data printing unit 30 correspond to an embodiment of the image recording control unit of the present invention.

  3 and 4 are sequence diagrams illustrating an example of a procedure of facsimile communication performed between the facsimile apparatus 1 as a receiver and the FAX 13 as a transmitter. When the user on the transmission side instructs the facsimile apparatus 1 to transmit image data by operating the FAX 13, the FAX 13 first captures the telephone line (step S1), and then the telephone number of the facsimile apparatus 1 that is the transmission destination. A dial pulse corresponding to (that is, facsimile number) is transmitted (step S2). When receiving the dial pulse, the telecommunications carrier's line switch 80 that provides the telephone line 12 calls the facsimile apparatus 1 that is the dialing destination (step S21). When the network control unit 103 of the facsimile apparatus 1 detects the calling signal (step S31), it captures the line (step S32). As a result, the FAX 13 detects an incoming call (Step S3), and at the same time, a communication path is established between the FAX 13 and the facsimile apparatus 1 through the circuit switch 80 (Step S22).

  Next, exchange of a control signal before a message (that is, image data to be transmitted by facsimile) is started between the FAX 13 and the facsimile apparatus 1 based on a G3 facsimile control procedure as an example. The exchange of the control signal before the message is executed by the control signal communication unit 20 of the facsimile controller 112 in the facsimile apparatus 1.

  As control signals before the message, first, DIS, CSI, and NSF control signals are sent from the facsimile apparatus 1 to the FAX 13 (steps S33 and S4). DIS is a signal that indicates the standard reception capability of the facsimile apparatus 1 that is the receiving side, and CSI is a signal that displays the telephone number (facsimile number) of the facsimile apparatus 1. NSF is a signal that indicates the non-standard capability of the facsimile apparatus 1.

  Next, the FAX 13 transmits DCS and TSI control signals to the facsimile machine 1 (steps S5 and S34). The DCS is a signal that displays a reception command and presents an operation mode. Examples of the operation mode include a standard mode and an error correction mode (ECM). TSI is a signal for displaying the telephone number (facsimile number) of FAX 13 on the transmission side.

  Next, the FAX 13 transmits a control signal TCF to the facsimile machine 1 (Steps S6 and S35). TCF is a signal for performing a training check for confirming the transmission speed of the high-speed modem. Next, when the modem is well adjusted and the preparation for reception is completed, the facsimile apparatus 1 transmits a control signal CFR to that effect to the FAX 13 (steps S36 and S7). This completes the exchange of control signals before the message. Then, the reception error detection unit 23 starts monitoring reception errors (step S50).

  Subsequently, the FAX 13 transmits the first page of image data to the facsimile machine 1 (step S8). When the facsimile apparatus 1 receives the image data, it is demodulated by the modem unit 102, decoded by the encoding / decoding unit 101, and stored in the image memory 4 by the received image data storage unit 21 (step S37). At this time, the received image data storage unit 21 stores the received image data and counterpart device information indicated by the control signal, for example, the telephone number of the transmission source in the image memory 4 in association with each other. As described above, in the facsimile apparatus 1, the received image data is temporarily stored in the image memory 4, and is printed after the reception of the image data is completed.

  When the transmission of the image data for one page is completed, the FAX 13 transmits PPS-MPS as a control signal after the message (step S9). In this example, it is assumed that the error correction mode is selected as the operation mode. In this case, one page is divided into one or a plurality of blocks (partial pages), and a control signal PPS is transmitted every time transmission of the blocks is completed. PPS represents the end of a block or partial page. The error check and retransmission request by the control signal communication unit 20 of the facsimile apparatus 1 on the receiving side are performed for each block. The MPS is a control signal for notifying that transmission for all one page has been completed and there is a next page. When receiving the PPS-MPS (step S38), the control signal communication unit 20 of the facsimile apparatus 1 sends the control signal MCF to the FAX 13 (steps S39 and S10). MCF indicates that complete image data has been received.

  When the reception is normally performed, the processes of steps S8 to S10 and S37 to S39 are repeatedly executed for each page, as exemplified as steps S11 to S13 and S40 to S42. When the transmission of the last page of image data (steps S14 and S43) is completed, the FAX 13 transmits PPS-EOP as a control signal after the message (step S15). EOP represents the end of communication. When receiving the PPS-EOP (step S44), the control signal communication unit 20 of the facsimile machine 1 sends the control signal MCF to the FAX 13 (steps S45 and S16). Then, the FAX 13 transmits a control signal DCN to the facsimile machine 1 (Steps S17 and S46). DCN is a control signal for instructing disconnection of a line.

  The FAX 13 that has transmitted the DCN and the facsimile apparatus 1 that has received the DCN both release the captured telephone line 12 (steps S18 and S47). Thereby, the circuit switch 80 disconnects the communication path (step S22). Thus, the facsimile communication between the facsimile machine 1 and the FAX 13 is completed. Subsequently, the facsimile machine 1 executes image data printing processing (step S48).

  FIG. 5 is a flowchart illustrating the procedure of reception error monitoring (step S50) by the reception error detection unit 23. In the example of FIG. 5, the reception error detection unit 23 monitors the reception error (No in step S51), and when the occurrence of a reception error is detected (Yes in step S51), the process proceeds to step S47. The reception error detection unit 23 monitors, for example, reception of an image signal and reception of a control signal after a message. If reception of an image signal stops and no control signal is received after a message, a reception error is generated. To detect. For example, as shown in FIG. 3, during the transmission (step S55) of the third page image data (steps S11 and S40), the control after the message such as PPS is stopped while the reception of the image data is stopped due to communication abnormality or the like. If no signal is received, the reception error detector 23 detects a reception error. As a result, the process proceeds to step S47, where the network control unit 103 releases the captured telephone line 12.

  FIG. 6 is a flowchart showing the procedure of the image data printing process (step S48). When the processing is started, the timer setting unit 25 determines whether or not the reception error detection unit 23 has detected a reception error for the reception of the current image data (step S61). If a reception error is detected (Yes in step S61), the timer setting unit 25 receives whether or not there is a page that has not been received in the image data, that is, the reception of the image data for all pages is not completed. It is determined whether or not reception of image data is stopped due to an error (step S62). Such a determination can be easily made by determining whether the reception error detection unit 23 has detected a reception error before the reception of the image data of all pages is completed. If an uncompleted part is included (Yes in step S62), the timer setting unit 25 sets the timer 24 (step S63). Thereafter, the image data printing process (step S48) ends. That is, when the received image data is poor reception image data that has been received halfway, the poor reception image data is not printed immediately but is left in the image memory 4 for the time being.

  On the other hand, if the image data received this time is not poor reception image data (No in step S61 or S62), the image data reading unit 27 is set in the timer setting unit 25 by examining the timer 24 and the image memory 4. Whether the predetermined time has not elapsed (that is, the timer has not been reached) is determined in the image memory 4 (step S64). If such image data is not stored (No in step S64), the image data reading unit 27 reads the image data received this time from the image memory 4, and the image data printing unit 30 activates the image recording controller 113, and All pages of the read image data are printed on the image recording unit 3 (step S65). When printing is completed, the image data erasing unit 31 erases the printed image data from the image memory 4 (step S66).

  On the other hand, if the reception failure image data that has not reached the timer out is stored in the image memory 4 in the determination of step S64 (Yes in step S64), the transmission source determination unit 28 receives the reception failure image data and this time. It is determined whether or not there is the same transmission source with the received image data (step S67). This determination can be easily performed by collating information (for example, telephone numbers) indicating the transmission source stored in the image memory 4 in association with the image data. As a premise of collation, the image data reading unit 27 reads out information to be collated from the image memory 4. If reception failure image data having the same transmission source is not stored in the image memory 4 (No in step S67), the process proceeds to step S65.

  On the other hand, if it is determined in step S67 that reception failure image data having the same transmission source as the currently received image data is stored in the image memory 4 (Yes in step S67), the image data comparison unit 29 performs the reception. The last page at the time when reception of the defective image data is interrupted is compared with the first page of the image data received this time (step S68), and it is determined whether or not they match (step S69). As a premise for comparison, the image data reading unit 27 reads the corresponding page to be compared from the image memory 4.

  FIG. 7 is an operation explanatory diagram illustrating the operation of the image data comparison unit 29. FIG. 7A shows the last page of poorly received image data, and shows the third page P3E as an example. FIG. 7B shows the first page P3 of the image data received this time, and the third page P3 of all the image data including the image data sent earlier. In each page, a header portion 51 and a body portion 52 are arranged. The header part 51 may be given a transmission time. As a result, the third pages P3E and P3 that should be the same image data may be different with respect to the header portion 51. Therefore, the image data comparison unit 29 determines whether or not the image data matches for a part 53 of the body part 52. Of the body portion 52, the entire area that has been received for the third page P3E may be the object of comparison, but it is usually sufficient to compare only a part of the area, and the time required for the comparison can be shortened.

  Returning to FIG. 6, if the image data received this time has been retransmitted by redialing from the last page of the previously received poorly received image data, the image data to be compared will match (step S69). If it is not retransmitted, the result does not match (No in step S69). If the image data do not match (No in step S69), the process proceeds to step S65.

  On the other hand, if it is determined in step S69 that the image data match (Yes in step S69), the image data reading unit 27 determines that the image data received poorly and the image data received this time are compared with each other. Read from the memory 4. The image data printing unit 30 activates the image recording controller 113 and causes the image recording unit 3 to print the read image data. At this time, the image data printing unit 30 causes the read image data to be printed after discarding the last page of the poorly received image data. Alternatively, the image data reading unit 27 reads the image data after discarding the last page of the poorly received image data (step S70).

  Subsequently, the timer reset unit 26 resets the timer 24 set corresponding to the printed poor reception image data (step S71). Next, the process proceeds to step S66, and the image data erasing unit 31 receives the image data printed in step S70, that is, the previously received defective image data (including the last page that is not printed) and the retransmitted data. The image data received this time is erased from the image memory 4. Thus, the image data printing process (step S48) is completed.

  As illustrated in FIG. 8, the image data reading unit 27 is configured so that when the retransmission data is not sent for the poorly received image data, the badly received image data is not printed and left in the image memory 4 indefinitely. 3 and 4 including the image data printing process (step S48) in FIG. 6, when the predetermined time set in the timer 24 elapses (that is, when the timer is reached), the set timer is set. All pages including the interrupted last page of the reception failure image data corresponding to 24 are read from the image memory 4. The image data printing unit 30 activates the image recording controller 113 and causes the image recording unit 3 to print the read image data (step S81). Next, the image data erasure unit 31 erases the printed poor reception image data from the image memory 4 (step S82).

  Note that the predetermined time set in the timer 24 is a time for waiting for retransmission of image data, and is set to a value within a range where there is a possibility of retransmission or a margin expecting some margin. Is desirable. For example, the predetermined time is set to a value within a range of about 1 minute to 10 minutes.

  FIG. 9 is an operation explanatory diagram showing how image data P1 to P5 consisting of all five pages are received and printed according to the procedure shown in FIGS. In each page shown in FIG. 9, a hatched portion indicates a portion that has been normally received, and a non-hatched portion indicates a portion that has not been received due to interruption. In addition, the “○” symbol attached to the left side of each page indicates that all data on the page has been received, and the “X” symbol indicates that some data on the page has not been received. ing.

  As shown in FIG. 9A, while the image data P1 to P5 are being received, a reception error occurs during the reception of the third page P3, and the third page P3 becomes the final page P3E. Shall. The received first page P1, second page P2, and third page P3E are stored in the image memory 4 as poorly received image data.

  As shown at the left end of FIG. 9B, it is assumed that image data from the third page P3 corresponding to the interrupted last page PE3 to the fifth page P5 which is the original last page is retransmitted and received. Then, since the last page P3E of the previous image data matches the first page P3 of the retransmitted image data, the last page P3E is discarded and received first as shown at the left end of FIG. 9C. The image data P1 and P2 and the image data P3 to P5 received this time are printed. That is, printing of overlapping image data is avoided, and original image data P1 to P5 are printed without excess or deficiency.

  Next, as shown in the center of FIG. 9B, the image data PA, PB, and PC that are not retransmitted are received before the previously received defective image data P1, P2, and P3E are printed. Shall be. In this case, the first page PA of the image data PA, PB, and PC is different from the previous last page P3E. Alternatively, even if the images coincide by chance, the transmission source is different. In this case, as shown in the center of FIG. 9C, only the image data PA, PB, and PC received this time are printed.

  Next, as shown at the right end of FIG. 9B, the received image data P1, P2, P3E is not received before the retransmitted image data P1, P2, P3E is not received, and as a result, it is not printed. It is assumed that the timer 24 set for the timer expires. In this case, as shown at the right end of FIG. 9C, all of the reception failure image data P1, P2, and P3E stored in the image memory 4 are printed.

  As described above, according to the facsimile apparatus 1, the received image data is printed without excess or deficiency by eliminating unnecessary duplication.

[Other embodiments]
(1) In the above embodiment, the facsimile apparatus 1 communicates with the FAX 13 through the telephone line 12, and when a reception error occurs in the process, unnecessary duplication is eliminated and image data is excessively transferred. It was configured to print without a shortage. On the other hand, the facsimile apparatus 1 may perform what is called Internet facsimile communication through the Internet. When a reception error occurs in the process, the facsimile apparatus 1 executes processing according to the procedure illustrated in FIGS. It may be what you do. In the present invention, “facsimile communication” includes such a communication form.

  (2) In the above embodiment, the first page of newly received image data matches the last page of previously received poorly received image data (Yes in step S69 of FIG. 6), and these Only when the transmission sources of the received images match (Yes in step S67 in FIG. 6), the last page of the defective reception image data is discarded, and the defective reception image data and the newly received image data are printed (FIG. 6). 6 step S70). On the other hand, it is possible to omit the processing in step S67 and adopt a form in which the consistency of the transmission source is not determined. In practice, it is extremely rare for the images being compared to match if the source is different.

1 is a block diagram showing a configuration of a facsimile apparatus according to an embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of a facsimile controller of the apparatus of FIG. 1. FIG. 2 is a sequence diagram illustrating a procedure of facsimile communication by the apparatus of FIG. 1. FIG. 4 is a sequence diagram following FIG. 3. It is a flowchart which shows the procedure of step S50 of FIG. It is a flowchart which shows the procedure of step S48 of FIG. FIG. 3 is an operation explanatory diagram illustrating the operation of the image data comparison unit in FIG. 2. 3 is a flowchart illustrating a processing procedure of an image data reading unit and an image data printing unit in FIG. 2. It is operation | movement explanatory drawing of the apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Facsimile apparatus 3 Image recording part 4 Image memory 10 Communication processing part 12 Telephone line 13 Facsimile apparatus (other party machine)
21 received image data storage unit 23 reception error detection unit 24 timer 25 timer set unit 26 timer reset unit 27 image data reading unit (image recording control unit)
28 Transmission Source Determination Unit 29 Image Data Comparison Unit 30 Image Data Printing Unit (Image Recording Control Unit)

Claims (3)

Image memory,
An image recording unit for printing image data;
A received image data storage unit that stores image data received through facsimile communication in the image memory;
The image data stored in the image memory after the completion of the reception of the image data is printed on the image recording unit, and the reception failure image data that is the image data that has been received in the middle is received by a predetermined preset until printing An image recording control unit that gives a waiting time of
The new image data of a plurality of pages when received, poor reception image data is not printed if I stored in the image memory, the first page and the poor reception image data of a new image data An image data comparison unit for comparing the final page,
The image recording control unit
If the image data match is recognized in the comparison by the image data comparison unit, the image of the defective reception image data and the new image data are recorded after the final page of the defective reception image data is discarded. Print
If the match of the image data is not recognized, the new image data is printed on the image recording unit,
If there is poor reception image data stored in the image memory and the reception of the new image data is not started within the predetermined waiting time, the poor reception image data is printed on the image recording unit. Facsimile device. A transmission source determination unit that determines whether or not the transmission source of the new image data matches the transmission source of the poorly received image data;
The image recording control unit, in addition to the matching of the image data in the determination of the image data comparison unit, only when the transmission source in the determination of the transmission source determination unit is recognized, the final of the poor reception image data 2. The facsimile apparatus according to claim 1, wherein after the page is discarded, the image recording unit prints the poorly received image data and the new image data.   3. The facsimile apparatus according to claim 1, wherein the image data comparison unit compares the first page of the new image data with the last page of the poorly received image data only in an area excluding a header portion.

Images